I'm glad to see SugarCRM make the list. I have worked with that application quite a lot and believe it to be one of the slickest web applications around, open source or otherwise, while the team behind it seem to have a very clear focus on what they want to achieve with the product.

I have been writing about web technology and software development since 2001. I am the developer of the Alpha Framework for PHP, and the Five.Today personal productivity app. I love open source, technology, and economics.